Ship&#39;s boat chock or support



3 Sheets-Sheet Hu k Hun U WHH HHHH I I N D. ROBERTS 2 02- ll )YocrZS 4 Mr Jivae rz Afiy SHIP'S BOAT CHOGK OR SUPPORT Filed March 10,

May 21, 1929.

May 21, 1929. D. ROBERTS 1,714,437

SHIPS BOAT CHUCK OR SUPPORT Filed March 10, 1927 3 Sheets-Sheet 3 I flare 12/0)" Patented May 21, 1-929.

- UNITED STATES PATENT OFFICE.

DANIEL ROBERTS, or 1300mm, LIVERPOOL,- ENGLAND.

sHiP's BOAT cHooK on surro'n'r.

Application. n ed mach 10,1927, Serial No.

This invention has reference to movable chocks or supports for ships boats, and it relates more particularly to that typev which are movable in their beds or bases, and when releasingthe boat are free to move longitudinally in said beds or bases from their normal position. According to the present invention, arms or devices are mounted on the chocks,,say on the outside faces, and adapted tobe acted upon whenthe gear is'actuated by plates or devices having a rocking or to and fro motion which so acts on the chocks as to move them away from one another and the boat;

' and in one arrangement the devices on the chocks are in the form of arms which may j be movable and. mounted on hinges, so that they can be moved on these hingesto an inclined position, say for instance about 45 and folded against the chock surfaces, the hinge mountings have a stop part thereon, which serves to limit their movement. ,1 The arms or devices on the chocks on which the plates or devices act when the gear is oper+ ated, are so constructed and adapted, that after the, chockschave been moved apart on their slide bases by the action of the gear,

they press the chocks outwardsfromtheir normal vertical planes, and cause them to topple over, and out of their bases onto the, ships deck, or out of the way of the boat in its launching movements.

In one arrangement the plates or devices which operate on and move the chocks constitute also chock locking "and releasing devices, and they are mounted onrodsor bars,

supported in bearings and" lying parallel- The boat normally rests on rollers under the keel, which is provided with projecting parts, which rest on'the rollers; and when the launching operation is taking place, and

.the chocks cleared outof the way by the lates of the gear above described, by movin fthe boaewhiehwill be slung taut on its tae lee-a slight distancelongittidmallmthe which the chocks to the slide bases 2.

air an in Great BritaimMay 21, 1926.,

projecting parts will run off the rollers, and so the boat will be fully suspended by the tackles, and it can be easily swung outboard.

In order that the plates or devices which actuate the chocks and'pres s themapart in the commencement of the launching and;

freeing operation, may be moved outwards 111 opposite directions, the rod orshaft on which one setis mounted or supported on the outside of the check supports orbases is not directly actuated by the operating gear at the other end of the gear, but this rod or shaft is provided with a toothed wheel mounted ina suitable bearing, and meshes with another toothed wheel in said bearing; and on the spindle of this wheel, the operating or moving lever is mounted, such lever being connected with the'opera'ting lever atthe opposite end by a suitableconnecting rod.

If in the aCtiOIIIOf the freeing or actuating gear the chocks are not moved quite clear of the course of the boat when moving itoutboard, or they; are loose and free,.-it can easily knock them aside.

. A locking device, cons sting say of a cleat,

, is fixed on one of the axle bars, and is passed over an eye say on the-base or support of the chocks, through which, when thelcleat is passed over" theeye, a locking pin-'or keycan be introduced, and so the whole gear is locked. I

The invention isillustrated by and will be further described'with reference tothe accompanying drawings, in which Figure l is aside elevation, and Figure 2'isa" plan showi ngv the gear; and Figure 3' isJan end vi'ew,:-' and Figure 4a plan in detail of the right hand chock, shown on a" larger scale. 7

Referringto the drawings, 1 are the chocks proper having projecting ribs on their hottoms, and2 the bases which are correspondingly grooved on their uppersurfaces, on

slide.

3 are the actuating and locking plates or devices mounted on therods 4, supported in.

bearings 5 at the operating ends of the rods, and intermediate and end bearings 6 fixed The operating offthe rodsd is efi ected through a hand lever, 7," which onthe left hand chock is a' continuation of the lever "portion 8 of the rod t. At the ,right' hand end, the lever 8 is mounted on a spindle 4 mounted inthe bearings 5at this end; the

we leversbeing-connected together by the.

rest and are. .adapted to connecting rod 9; and at this end the rod 4 is operated from the lever 8 through toothed Wheels 12, the bearing 5 having two flanges or cheeks on a base, and the two wheels 12 mounted between them, and the lever 8 on the spindle 4* also lies within these cheeks; By this arrangement, when the checks are pressed-by the devices 3, tending to cause them to topple from their bases 2, both sets of them are pressed! outwards towards the I end of the boat, and thus they move towards the narrower part of it, and therefore their falling is not impeded or interfered with in any way and therefore a free and unstructed way for the launching of the boat outboard.

Normally, when in the chocks, the boat rests on rollers 10 carried in bracket bearing 11, mounted on the slide bases 2, and a point intermediate same; the boat keel being provided at the points where the rollers come with projecting portions 10% The devices on which the plates 3 act to press the chocks apart, and cause them to topple off their bases 2, are marked 13; and

in the'case shown, the plates 3 also serve as looking devices to the chocks when in their supporting position; and in locking the chocks, they are caused to enter slotsin the deck, the hinged arms or members 13 will outside faces of the chocks. The devices 13 V shown, are in the form of arms; and they are hinged at 15 in brackets 16, the outer ends of which extend beyond the hinges 15 and forming astop, so that when the gear is to be operated, and the arms 13 are in their outer position, they will be held at the required angle, such as that shown, so that by pulling on the actuating lever 7, the backs of the plates 3 will act on the two inclined arms,

and cause the chocks to slide on their grooved bases 2 away from one another, so as to be clear of the boat. By the further movement of the hand actuating lever 7, the plates 3 will act on theinwardly turned ends 13 of the arms 13, and this further pressure acting on these parts, will have the effect of tending to push the chocks 1-which are now free of the boatto fall bodily'outwards from their normal plane, and off their bases 2, so that they will then become quite clear of the boat in its launching movements; and as stated, this movement of both sets of chocks is outward and towards the narrower parts or ends-of the boat. But even if by some chance the chocks should not be toppled over or moved clear away by the action of the devices 3, they are quitefree, and by the movement of the boat longitudinally in its launching actions, they would be pushed over, and tumble down on to the deck.

When the chocks fall over towards the come in contact with it, and through their hinges they can fold up against the chocks when they strike the deck, and thus the chocks can fall and lie practically flat down on the deck, and thus be entirely removed from interference with the boats action.

As above stated, the projecting portions 1O of the keel of the boat rest on the rollers 10, and in the launching operation of the boat when the chocks are clear out of the way as described, the boat 10 (which will be slung on its tackles) will be moved a short distance longitudinally, whereupon the parts 10 will be run off the rollers 10, and so the boat will be fully suspended by the tackles, and-itcan be easily swung outboard throughand outside its pivoted davits in the usual Way.

To replace the boat in the chocks, after being swung by the davits over the ch'ocks, which will have been moved to their normal housing position and locked, and the keel projections 10* are over the rollers 10, the boat is lowered until the projections rest-on the rollers.

A locking device consisting of a hinged cleat 17 is fixed on the rods l, and works over an eye 18 fixed in the slide bases 2, sothat normally this cleat will lie over the eye 18; and it is secured in position by a pin passed through the eye, as shown. When the boat is to be launched the pin is removed, thus freeing the gear.

What is claimed is 1. In the ships boat chock gear, chocks at each end of the boat adapted to be moved laterally away from each other, shafts parallel with the surfaces of. the checks, and adapted to be turned axially, a hand operating mechanism for turning the shafts, inclined devices on the faces of the chocks, arm devices on the shafts adapted to act on the inclined devices and move the chocks apart, and parts on the inclined devices adapted also to be acted upon by the, arm devices and press the chocks out of the plane in which they normally stand, and cause them to topple over.

I 2. In the ships boat chock gear, chocks at each end of the boat adapted to be moved laterally away from each other, shafts parallel.

with the surfaces of the chocks, and adapted to be turned axially, a hand operating mechanism for turning the shafts, hinged inclined devices on the faces of the chocks, arm devices on the shafts adapted to act on the inclined devices and move the chocks apart, and parts on the inclined'devices adapted also to be acted upon by the arm devices and press thechocks out of the plane in which they nor mally stand, and cause them to topple over.

3.'In the ships boat chock gear, chocks at the opposite ends, operating axially rotative shafts on the outside surfaces ofthechocks, inclined devices on the outside surfaces of the chocks, arm devices on the shafts for acting moved laterally relative to each other, means chocks at the opposite end of the gear in opposite directions and towards the narrower or smaller ends of the boat, and to topple them over outwards from one another.

4. In the ships boat chock gear, chocks at the opposite ends, operating axially rotative shafts on the outside surfaces of the Chocks, inclined devices on the outside surfaces of the chocks, arm devices on the shafts for acting on the inclined devices for moving the chocks at the same end of the boat laterally apart, and parts on the inclined devices adapted when acted on by the arm devices to press the chocks at the opposite end of the gear in opposite directions and towards the narrower or smaller ends of the boat, and totopple them over outwards from one another; the shaft at one end of the gear having toothed wheel on it, and a toothed wheel on the separate shaft or spindle ;the latter shaft or spindle being connected with the shaft at the other end of the gear by connecting by a rod, so that the two sets of devices connected with the two sets of chocks act together.

5. In a ships boat chock gear, chocks at the respective ends of the boat mounted to be on the chocks to insure a relative movement of the chocks in operation, and a hand-operated mechanism including devices to act on said means to thereby compel a relative movement of the chocks.

6. In a ships boat chock gear,chocks at the respective ends of the boat thechocks at each end being movable laterally relative to each other, shaftsarranged parallel with the surface of the checks, hand-operating devices for turning the shafts, means on the chockse other, shafts parallel with the surface of the;

chocks adapted to be turned axially,hand operating mechanism for turning said shafts, arm devices on the shafts adapted to act on the means on the checks and move them out of theplane in which they normally stand and cause them to topple over.

name to this specification. v

. n. ROBERTS.-

In testimony whereof I have signed my 

